<script lang="tsx">
import type { Ref } from 'vue'
import { computed, defineComponent, toRefs, unref } from 'vue'
import type { FormActionType, FormProps, FormSchema } from '../types/form'
import type { Rule } from 'ant-design-vue/lib/form'
import type { TableActionType } from '@/components/Table'
import { Col, Divider, Form } from 'ant-design-vue'
import { componentMap } from '../componentMap'
import { BasicHelp } from '@/components/Basic'
import { isBoolean, isFunction, isNull } from '@/utils/is'
import { getSlot } from '@/utils/helper/tsxHelper'
import { createPlaceholderMessage, NO_AUTO_LINK_COMPONENTS, setComponentRuleType } from '../helper'
import { cloneDeep, upperFirst } from 'lodash-es'
import { useItemLabelWidth } from '../hooks/useLabelWidth'
import { useI18n } from '@/hooks/web/useI18n'

export default defineComponent({
  name: 'BasicFormItem',
  inheritAttrs: false,
  props: {
    schema: {
      type: Object as PropType<FormSchema>,
      default: () => ({})
    },
    formProps: {
      type: Object as PropType<FormProps>,
      default: () => ({})
    },
    allDefaultValues: {
      type: Object as PropType<Recordable>,
      default: () => ({})
    },
    formModel: {
      type: Object as PropType<Recordable>,
      default: () => ({})
    },
    setFormModel: {
      type: Function as PropType<(key: string, value: any, schema: FormSchema) => void>,
      default: null
    },
    tableAction: {
      type: Object as PropType<TableActionType>
    },
    formActionType: {
      type: Object as PropType<FormActionType>
    },
    isAdvanced: {
      type: Boolean
    }
  },
  setup(props, { slots }) {
    const { t } = useI18n()

    const { schema, formProps } = toRefs(props) as {
      schema: Ref<FormSchema>
      formProps: Ref<FormProps>
    }

    const itemLabelWidthProp = useItemLabelWidth(schema, formProps)

    const getValues = computed(() => {
      const { allDefaultValues, formModel, schema } = props
      const { mergeDynamicData } = props.formProps
      return {
        field: schema.field,
        model: formModel,
        values: {
          ...mergeDynamicData,
          ...allDefaultValues,
          ...formModel
        } as Recordable,
        schema: schema
      }
    })

    const getComponentsProps = computed(() => {
      const { schema, tableAction, formModel, formActionType } = props
      let { componentProps = {} } = schema
      if (isFunction(componentProps)) {
        componentProps = componentProps({ schema, tableAction, formModel, formActionType }) ?? {}
      }
      if (schema.component === 'Divider') {
        componentProps = Object.assign(
          { type: 'horizontal' },
          {
            orientation: 'left',
            plain: true
          },
          componentProps
        )
      }
      return componentProps as Recordable
    })

    const getDisable = computed(() => {
      const { disabled: globDisabled } = props.formProps
      const { dynamicDisabled } = props.schema
      const { disabled: itemDisabled = false } = unref(getComponentsProps)
      let disabled = !!globDisabled || itemDisabled
      if (isBoolean(dynamicDisabled)) {
        disabled = dynamicDisabled
      }
      if (isFunction(dynamicDisabled)) {
        disabled = dynamicDisabled(unref(getValues))
      }
      return disabled
    })

    function getShow(): { isShow: boolean; isIfShow: boolean } {
      const { show, ifShow } = props.schema
      const { showAdvancedButton } = props.formProps
      const itemIsAdvanced = showAdvancedButton ? (isBoolean(props.isAdvanced) ? props.isAdvanced : true) : true

      let isShow = true
      let isIfShow = true

      if (isBoolean(show)) {
        isShow = show
      }
      if (isBoolean(ifShow)) {
        isIfShow = ifShow
      }
      if (isFunction(show)) {
        isShow = show(unref(getValues))
      }
      if (isFunction(ifShow)) {
        isIfShow = ifShow(unref(getValues))
      }
      isShow = isShow && itemIsAdvanced
      return { isShow, isIfShow }
    }

    function handleRules(): Rule[] {
      const { rules: defRules = [], component, rulesMessageJoinLabel, label, dynamicRules, required } = props.schema

      if (isFunction(dynamicRules)) {
        return dynamicRules(unref(getValues)) as Rule[]
      }

      let rules: Rule[] = cloneDeep(defRules) as Rule[]
      const { rulesMessageJoinLabel: globalRulesMessageJoinLabel } = props.formProps

      const joinLabel = Reflect.has(props.schema, 'rulesMessageJoinLabel') ? rulesMessageJoinLabel : globalRulesMessageJoinLabel
      const defaultMsg = createPlaceholderMessage(component) + `${joinLabel ? label : ''}`

      function validator(rule: any, value: any) {
        const msg = rule.message || defaultMsg
        if (value === undefined || isNull(value)) {
          // 空值
          return Promise.reject(msg)
        } else if (Array.isArray(value) && value.length === 0) {
          // 数组类型
          return Promise.reject(msg)
        } else if (typeof value === 'string' && value.trim() === '') {
          // 空字符串
          return Promise.reject(msg)
        } else if (
          typeof value === 'object' &&
          Reflect.has(value, 'checked') &&
          Reflect.has(value, 'halfChecked') &&
          Array.isArray(value.checked) &&
          Array.isArray(value.halfChecked) &&
          value.checked.length === 0 &&
          value.halfChecked.length === 0
        ) {
          // 非关联选择的tree组件
          return Promise.reject(msg)
        }
        return Promise.resolve()
      }

      const getRequired = isFunction(required) ? required(unref(getValues)) : required

      /*
       * 1、若设置了required属性，又没有其他的rules，就创建一个验证规则；
       * 2、若设置了required属性，又存在其他的rules，则只rules中不存在required属性时，才添加验证required的规则
       *     也就是说rules中的required，优先级大于required
       */
      if (getRequired) {
        if (!rules || rules.length === 0) {
          rules = [{ required: getRequired, validator }]
        } else {
          const requiredIndex: number = rules.findIndex((rule) => Reflect.has(rule, 'required'))

          if (requiredIndex === -1) {
            rules.push({ required: getRequired, validator })
          }
        }
      }

      const requiredRuleIndex: number = rules.findIndex((rule) => Reflect.has(rule, 'required') && !Reflect.has(rule, 'validator'))

      if (requiredRuleIndex !== -1) {
        const rule = rules[requiredRuleIndex]
        const { isShow } = getShow()
        if (!isShow) {
          rule.required = false
        }
        if (component) {
          if (!Reflect.has(rule, 'type')) {
            rule.type = component === 'InputNumber' ? 'number' : 'string'
          }

          rule.message = rule.message || defaultMsg

          if (component.includes('Input') || component.includes('Textarea')) {
            rule.whitespace = true
          }
          const valueFormat = unref(getComponentsProps)?.valueFormat
          setComponentRuleType(rule, component, valueFormat)
        }
      }

      // Maximum input length rule check
      const characterInx = rules.findIndex((val) => val.max)
      if (characterInx !== -1 && !rules[characterInx].validator) {
        rules[characterInx].message = rules[characterInx].message || t('component.form.maxTip', [rules[characterInx].max] as Recordable)
      }
      return rules
    }

    function renderComponent() {
      const { renderComponentContent, component, field, changeEvent = 'change', valueField } = props.schema

      const isCheck = component && ['Switch', 'Checkbox'].includes(component)

      const eventKey = `on${upperFirst(changeEvent)}`

      const on = {
        [eventKey]: (...args: Nullable<Recordable>[]) => {
          const [e] = args
          if (propsData[eventKey]) {
            propsData[eventKey](...args)
          }
          const target = e ? e.target : null
          const value = target ? (isCheck ? target.checked : target.value) : e
          props.setFormModel(field, value, props.schema)
        }
      }
      const Comp = componentMap.get(component) as ReturnType<typeof defineComponent>

      const { autoSetPlaceHolder, size } = props.formProps
      const propsData: Recordable = {
        allowClear: true,
        getPopupContainer: (trigger: Element) => trigger.parentNode,
        size,
        ...unref(getComponentsProps),
        disabled: unref(getDisable)
      }

      const isCreatePlaceholder = !propsData.disabled && autoSetPlaceHolder
      // RangePicker place is an array
      if (isCreatePlaceholder && component !== 'RangePicker' && component) {
        propsData.placeholder = unref(getComponentsProps)?.placeholder || createPlaceholderMessage(component)
      }
      propsData.codeField = field
      propsData.formValues = unref(getValues)

      const bindValue: Recordable = {
        [valueField || (isCheck ? 'checked' : 'value')]: props.formModel[field]
      }

      const compAttr: Recordable = {
        ...propsData,
        ...on,
        ...bindValue
      }

      if (!renderComponentContent) {
        return <Comp {...compAttr} />
      }
      const compSlot = isFunction(renderComponentContent)
        ? { ...renderComponentContent(unref(getValues)) }
        : {
            default: () => renderComponentContent
          }
      return <Comp {...compAttr}>{compSlot}</Comp>
    }

    function renderLabelHelpMessage() {
      const { label, helpMessage, helpComponentProps, subLabel } = props.schema
      const renderLabel = subLabel ? (
        <span>
          {label} <span class="text-secondary">{subLabel}</span>
        </span>
      ) : (
        label
      )
      const getHelpMessage = isFunction(helpMessage) ? helpMessage(unref(getValues)) : helpMessage
      if (!getHelpMessage || (Array.isArray(getHelpMessage) && getHelpMessage.length === 0)) {
        return renderLabel
      }
      return (
        <span>
          {renderLabel}
          <BasicHelp placement="top" class="mx-1" text={getHelpMessage} {...helpComponentProps} />
        </span>
      )
    }

    function renderItem() {
      const { itemProps, slot, render, field, suffix, component } = props.schema
      const { labelCol, wrapperCol } = unref(itemLabelWidthProp)
      const { colon } = props.formProps

      if (component === 'Divider') {
        return (
          <Col span={24}>
            <Divider {...unref(getComponentsProps)}>{renderLabelHelpMessage()}</Divider>
          </Col>
        )
      } else {
        const getContent = () => {
          return slot ? getSlot(slots, slot, unref(getValues)) : render ? render(unref(getValues)) : renderComponent()
        }

        const showSuffix = !!suffix
        const getSuffix = isFunction(suffix) ? suffix(unref(getValues)) : suffix

        // TODO 自定义组件验证会出现问题，因此这里框架默认将自定义组件设置手动触发验证，如果其他组件还有此问题请手动设置autoLink=false
        if (NO_AUTO_LINK_COMPONENTS.includes(component)) {
          props.schema &&
            (props.schema.itemProps! = {
              autoLink: false,
              ...props.schema.itemProps
            })
        }

        return (
          <Form.Item
            name={field}
            colon={colon}
            class={{ 'suffix-item': showSuffix }}
            {...(itemProps as Recordable)}
            label={renderLabelHelpMessage()}
            rules={handleRules()}
            labelCol={labelCol}
            wrapperCol={wrapperCol}
          >
            <div style="display:flex">
              <div style="flex:1;">{getContent()}</div>
              {showSuffix && <span class="suffix">{getSuffix}</span>}
            </div>
          </Form.Item>
        )
      }
    }

    return () => {
      const { colProps = {}, colSlot, renderColContent, component } = props.schema
      if (!componentMap.has(component)) {
        return null
      }

      const { baseColProps = {} } = props.formProps
      const realColProps = { ...baseColProps, ...colProps }
      const { isIfShow, isShow } = getShow()
      const values = unref(getValues)

      const getContent = () => {
        return colSlot ? getSlot(slots, colSlot, values) : renderColContent ? renderColContent(values) : renderItem()
      }

      return (
        isIfShow && (
          <Col {...realColProps} v-show={isShow}>
            {getContent()}
          </Col>
        )
      )
    }
  }
})
</script>
